The gas-phase reaction between nitrogen and oxygen was carried out in a device designed to maintain constant pressure. there are two cylinders of equal volume with a reaction arrow between them. the cylinder on the left has two molecules of o 2 and two molecules of n 2. the cylinder on the right has four molecules of n o. a constant pressure is applied to both cylinders write the balanced chemical equation for the reaction between nitrogen oxygen. include physical states.

Aparticle's position is given by x = 3.00 - 9.00t + 3t2, in which x is in meters and t is in seconds. (a) what is its velocity at t = 1 s? (b) is it moving in the positive or negative direction of x just then? (c) what is its speed just then? (d) is the speed increasing or decreasing just then? (try answering the next two questions without further calculation.) (e) is there ever an instant when the velocity is zero? if so, give the time t; if not, answer "0". (f) is there a time after t = 3 s when the particle is moving in the negative direction of x? if so, give the time t; if not, answer "0".